4.115
Last change
on this file since c499856 was
c499856,
checked in by Chris Johns <chrisj@…>, on 03/20/14 at 21:10:47
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Change all references of rtems.com to rtems.org.
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Property mode set to
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File size:
874 bytes
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1 | /* |
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2 | * Timer Init |
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3 | * |
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4 | * Use the last DMA timer (DTIM3) as the diagnostic timer. |
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5 | * |
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6 | * Author: W. Eric Norum <norume@aps.anl.gov> |
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7 | * |
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8 | * COPYRIGHT (c) 2005. |
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9 | * On-Line Applications Research Corporation (OAR). |
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10 | * |
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11 | * The license and distribution terms for this file may be |
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12 | * found in the file LICENSE in this distribution or at |
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13 | * http://www.rtems.org/license/LICENSE. |
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14 | */ |
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15 | |
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16 | #include <rtems.h> |
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17 | #include <rtems/btimer.h> |
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18 | #include <bsp.h> |
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19 | |
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20 | void benchmark_timer_initialize(void) |
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21 | { |
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22 | uint32_t preScaleDivisor = bsp_get_BUS_clock_speed() / 1000000; |
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23 | |
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24 | MCF_DTIM3_DTMR = 0; |
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25 | MCF_DTIM3_DTMR = MCF_DTIM_DTMR_PS(preScaleDivisor - 1) | |
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26 | MCF_DTIM_DTMR_CLK_DIV1 | MCF_DTIM_DTMR_RST; |
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27 | } |
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28 | |
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29 | /* |
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30 | * Return timer value in microsecond units |
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31 | */ |
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32 | uint32_t benchmark_timer_read(void) |
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33 | { |
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34 | return MCF_DTIM3_DTCN; |
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35 | } |
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36 | |
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37 | void benchmark_timer_disable_subtracting_average_overhead(bool find_flag) |
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38 | { |
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39 | } |
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